#ifndef IO_CHANNEL_H
#define IO_CHANNEL_H
/*
channel should be a physical link between two equipments. like tcp connection. 
it should be different from session, session should be logic conception, there 
maybe several session on a tcp connection. 
channel should also be different from connection, connection should be connected. 
like tcp .and channel should pass through several nodes in the way. or maybe several 
connections can combine to one channel, like connection backup etc. 
so the relation is 

channel (1)-------------------->(n) connection (1)-------------->(n) session 
current we just implement the one to one relationship, make it extendability.


*/
namespace vpm
{
	namespace mina
	{

		class IoChannel
		{
		public:
		};
	}
}


#endif // IO_CHANNEL_H